Originally Posted by Xan

In that case, might as well at the reset procedure to this thread:

1. Turn the ignition from OFF to ON, you don't have to start the car for this. Just press the start button until it gets to the ON state, usually OFF > ACC > ON.
2. The airbag light should turn on, wait until it turns off (it should stay on for 7 secs and then turn off) and then turn the ignition to OFF within 1 second.
3. Wait more than 3 seconds after the ignition turns OFF.
4. Repeat steps 1 to 3, twice. (Total 3 times)